Friday, October 28, 2005

Bacterial machines--real ones

Fully merging microbe and machine for the first time, scientists have created gold-plated bacteria that can sense humidity.

The breakthrough is the first "cellborg," heralding what might become an array of devices that could sense dangerous gases or other hazardous substances.

The bioelectronic device swells and contracts in response to how much water vapor is in the air. It’s called a cellborg humidity sensor, and it is at least four times more sensitive than those that are solely electronic. It even works even when its biological parts are long dead.

(More info and technical details in the article).

We're already using bacteria for bio-remediation, to produce insulin and growth hormone, in mining, and even to control mosquito populations. I anticipate that the applications will grow exponentially in years to come, reminding us again just what a large role these microscopic critters play in our everday lives.

About me

I'm Tara C. Smith

From Iowa, United States

I'm a mom and a scientist, your basic stressed-out, wanna-have-it-all-and-do-it-all Gen Xer. Recently transplanted from Ohio to Iowa, I've spent most of my life in the midwest (with 4 years of college spent out east in "soda" territory). My main interest, and the subject of my research, is infectious disease: how does the microbe cause illness? What makes one strain nasty, and another "avirulent?" Are the latter really not causing any disease, or could some of those be possible for the development of chronic disease years down the road?
Additionally, I've spent a lot of time discussing the value of teaching evolution, and educating others about "intelligent design" and other forms of creationism. My interest in history of science and medicine is also useful as a way to tie all of the above interests together.
[Disclaimer: the views here are solely my own, and do not represent my employer, my spouse, that guy who's always sitting by the fountain when I come into work, or anyone else with whom I may be remotely affiliated.]